lcd1602顯示及測試程序

1、本程序共分為三個文件：/*文件 */#include<>#include<>#define uchar unsigned char#define uint unsigned int void delay_ms(uint x)uint i,j;for(i=0;i<x;i+)for(j=0;j<120;j+); void main()Lcd_init();Write_char(0,10,'a');Write_string(1,0,"b b");delay_ms(1000);Clear_line(0);Write_string(

2、0,0,"clear 0 line OK!");delay_ms(1000);Clear_line(1);Write_string(1,0,"clear 1 line OK!");delay_ms(1000);Clear_all();Write_string(0,1,"Clear all Ok!") ;while(1);/*文件 */#include<>#include<>#define uchar unsigned char#define uint unsigned int#define Nop _nop_(

3、)#define Lcd_data P0#define busy 0x80/* 數(shù)據(jù)口 */* 檢測忙狀態(tài)*/sbit rs = P2A4;sbit rw = P2A5;sbit en = P2A6;void delay(uchar x)uchar i,j;for(i=0;i<x;i+)for(j=0;j<125;j+);/* 寫命令 */void Write_com(uchar com)rs = 0;delay(5);rw = 0;delay(5);Lcd_data = com;delay(5);en = 0;delay(10);en =1;delay(10);/* 寫數(shù)據(jù) */

4、void Write_data(uchar dat)rs = 1;delay(5);rw = 0;delay(5);Lcd_data = dat;delay(10);en =0;delay(5);en = 1;delay(10);/* 初始化 */void Lcd_init()Lcd_data = 0x00;delay(15);Write_com(0x38);delay(5);Write_com(0x38);delay(5);Write_com(0x38);delay(5);/* 顯示模式設(shè)置*/* 顯示關(guān)閉*/* 顯示清屏*/* 顯示光標(biāo)移動設(shè)置*/* 顯示開及光標(biāo)設(shè)置*/Write_com

5、(0x38);Write_com(0x08);Write_com(0x01);Write_com(0x06);Write_com(0x0c); void Write_char(uchar x,uchar y,uchar dat)x &=0x1;/* 限制x 不能大于1*/y &=0xf;/* 限制y 不能大于15*/if(x)y |= 0x40 ; /* 如果 y 大于 1，則在第二行顯示*/y |= 0x80;Write_com(y);Write_data(dat); void Write_string(uchar x,uchar y,uchar *str)uchar len

6、gth = 0;x &=0x1;/* 限制x 不能大于1*/y &=0xf;/* 限制y 不能大于15*/while(*str!='0')Write_char(x,y,*str);y+;str+; void Clear_line(uchar line) Write_string(line,0,");switch(line) case 0: Write_com(0x80);case 1: Write_com(0x80+0x40); default : break;void Clear_all() Write_com(0x01);Write_com(0x80);/* 文件 */#define uchar unsigned char#define uint unsigned int #ifndef Lcd1602_h #define Lcd1602_h extern Lcd_init();extern Write_data(uchar dat);extern Write_char(uchar x,uchar y,uchar dat);extern Write_string(uchar x,uchar y,uc